Attachment for typewriting machines



Oct. 16, 1,945. P. HEGNAUER 2,387,068

ATTACHMENT FQR TYPEWRITING MACHINES Filed Jan. e, 1,945 l 4 sheets-sheet 1 62 @L c@ v cm :r 5.4

INVENTOR ATTOR N EYS Oct. 16, 1945. P. Hl-:GNAUER Y '2,387,053

`TTACHMENT FOR TYPEWRITINGA MACH-INES Filed Jan. 6,1945 4 sheets-sheet a ATTORNEYS Oct. 16, 1945. P. HEGNAUER ATTACHMENT FOR TYPEWRITING MACHINES 4 sheets-sheet 5 Filed Jan. 6, 1943 INVENTOR PAI/L-'HfeA/AuE/z I BY .l

ATTOR N Ys Oct. 16, 1945. P. HEGNAUER ATTACHMENT FOR TYPEWRITING MACHINES Filed Jan.v e, 1943 y 4 Sheets-Sheet 4 wml@ t. im?

El NVENTOR BY PAUL HEGA/A UER ATTORNEYS Patented ocr. 16, 1945 f Paul Hegnauer, Berlin, Germany, assignor toRuf- Buchhaltung Aktiengesellschaft, Zurich,l Switzerland, a corporation of Switzerland ApplicationJanuary .6, 1943, swarm. 4111521 In Switzerland March 30, 1942 1o claims. (el. 1er-12s) The present invention relates to attachments for typewriting machines, particularly adapted to facilitate the rapid and accurate locating of forms for instance of an individual account sheet over a ledger sheet and over a record sheet placed on the platen of the paper carriage in such a position that simultaneously entries may bel written on three forms.

One object of the invention is to provide a contrivance for a type writing machine which will enable one or more forms to be quickly and accurately and individually positioned above the record sheet fastened on the platen in such a manner that the lines of all the superposed forms on which the entry is to be written are exactly in line one above the other. K

A further object of the invention consists in the provision of a device of the lsaid type which allows the partial replacement of the forms and the recollation of the same in a speedy manner.

To the accomplishment of these objects and of the invention is illustrated in lthe accompany-l ing drawings.

In the drawings the device is shown in a diagrammatical manner:

Fig. 1 is afront elevationof the carriage of a typewriter, parts being broken away, only those parts being shown which are essential-for the explanation of the invention. 4

Fig. 2 shows parts of the device in a plan view.

Fig. 3 is a side elevation, parts being shown in section. f

Fdig. 4 shows an actuating rack in side elevation an Fig. 5 a set of arresting bars with actuating levers.

Figs. 6, 7, 8 and 9.are sections on the lines 'VI-VI, VII-VII, VIII-VEL and IX-IX of Fig. 5. Y

Fig. 10 is a detail of construction on a larger scale.

Fig. 11 is a side elevational view of a hand operated sheet feeding device.

On the carriage I of a type writing machine a by bevel gears I, Ia (Flein a shaft ls and shaft I0 by bevel gears l2, 'I4 a hollow shaft |8 loosely mounted on shaft I5. The shaft llcarries aspur wheel andthe shaft I6 a spur wheel |8.`. The spur wheels il, I8 engage toothed-racks L9, 28 re spectively. The racks I9, run parallel each other, they are slidably mounted in the carriage I.

4Each rack standsy under the actionofa coiled I is arranged (Figs. 3, 4 and 5).

. spring ,f (Figs. 2, 4) one end of which is fastened to the rack and the other to the end wall of the carriage. At the centre of the back wall of the frame of the type writing machine a casing 2| In said casing 2| 'a row of .vertical bars 22 (Figs. 4, 5, 7, 9) are arranged. The bars 22 run in a vertical direction, I they are at equal distance apart and each of them may be brought in the path of noses 34, of the others as will hereinafter appear, an embodiment chine (Fig. 2).

projection 22a extending below a lever 43 (Figs.\

rack I9, 20. Each bar 22 stands underA the action of a 'spring 32 and may be moved upwardly lagainst the-action of Vsaid spring 32 by a lever 28 pivoted in the frame of the machine.v One end of said lever 23 is provided with a button 28 the other end with across pin 3| engaging a notch 36 at the lower end of bar 22. The buttons 28 of all the levers 29 and the bars 22 are arranged in rows in front of the keys of the type writing ma- Each bar 22 is provided with a 5-9) rockably mounted on the wall of casing 2|. The lever 43 co-operates with a two-armed lever 5| pvoted at 52 to the back Wall of casing'2l. One arm of lever 5| is held in contact with the horizontal bar 2 is fastened on which a chute 4 is adjustably mounted and held by a set screw 3 (Fig. 3). In the chute 4 a partition wall 5 is arranged in such a manner that two guidey ways for two sheets are formed. On the side wall of lever 43 by a spring 53, the other arm ends in a pin 36 engaging a bore of a bar 23. The latter is slidably mounted on a stud of a link 48a pivoted at 48h to the wall of the casing 2|, the upper end projects through a. slot of said casing `and may be made to co'operate with vthe two racks I9, 28. In. the position shown in Figs. 4 and 'I the bar 23 retains the rack I9 in its'position against the action of spring f. The stud 4U projects through a slot'in the bar 23 in such a manner that the same may be lifted but vertically Moreover the bar 23 may l by the levers y|33 and 5|. be turned on the pin 38 to bring the upper end thereof in or out of theV path of the two racks ,I 3, 20 so that they may be set by the action of the spring f. In the position of rest shown in Fig.'8,

the upper ends of two levers 38 pivotally mounted on vthe side wall of casing 2| are held in contact with the pin 4|) of'link 40a and with a pin 4| of the casing 2| by `a spring 38. In'this position the bar 23 locks the rack I9. To bring bar 23 either in the path of rack 28 or else in or out of the path of both recits I3, 20 the bar 23 is turned n a pin 42 of the lever 43 a bar 24 is rockably mounted.` The bar 24 takes part of the'movements of 'said lever 43 and may be turned on pin 42 by a.

rod`45.- One end of rod 45 ends near the keys 28 the bar 24 in its position. The upper end of bar 24 cooperates with' two pawls 25, 26 engaging the racks I9` and 20 respectively and held in engaging position by spring 21. If bar 24 is lifted by lever 43 it strikes against one or the other pawl 25, 26 (Fig. 6) according to the position into which it has been brought by rod 45.

and by a hand lever 54 (Figs. 2l and 11). The lever 54 is pivoted to the frame of the carriage I. One arm 55 of lever 54 acts on a bar `56 (Fig. 11) slidably mounted onthe said frame. `The bar 56 operates anangular lever 51 pivoted at 58. One arm 56 of lever 5T engages a horizontal-,slot 60 of a member 6I rockingly mounted on a pin 66 pro- Jecting throughavertical slot 65. The member 30 chute are made-of transparent material to facili- 6I carries a, pawl 62 which is held in engagement with the spur wheel .Il by means of a spring 64 attached with one end to the member. 6I and with lthe other to the frame of the carriage I. By opf erating thehand lever 54 once, the pawl 62 shifts` thespuriwheel I'I by one tooth. The pawl25 is vwithdrawn from the rack I9 the latter allows the wheel I1 to rotate. The rotation of the wheel II is transmitted to shaft 9 and the spur wheels 1, I move the sheet 68 (Fig. 3) in the chute by one 1ine. 'I he perforations 61 are rectangular, the teeth of the spur wheels have a good bearing on the edges of the said perforation. The locating device may be used as follows to place two diier` ent sheets above a third sheet which is held` on the platen of the carriage by well known means.

The two sheets are introduced in the vf huteI one on each side ofy the partition wall (Fig."3). The lower edges of both sheets rest on the teeth of the spunwheels 1, 'I and B, 8. The carriage I is brought to its end position, its actuating spring 50 is thereby tensioned. During lthis. movement of the carriage I, the'racks I9, 20 are held stationary by the bar 23 engaging the noses '34, 35 of said racks. The springs F are tensioned. 'I'he rod 45 is-actuated and the upper end of bar 24 isposi tionedbelow the'pawl 26 (Fig. 4). The key 28cor responding-to that lneof -the sheet 68a on which an entry is to be made is now pressed. The corfrespo'ndingbar 22 is lifted by lever 29 and rocks thereby lever 43 and therewith lever 5I.

The latter draws bar 23 downwardly, while bar 24 is moved upwardly far enough to bring the pawl A215 out of engagement wfh rack' 20 (Figs.- 4, 6).

'Ihe bar 23 has in the meantime freed the rack 20 and the contacting spring f draws the rack 2` 65 until itsnose 35 strikes against the upper end of bar 22-which has been set by the key 28. The

tion met; be until that line of sheet 68s it .on pin 36 by a rod 31. The rod 31 ends near the -.lreys 23 and may be moved manually.

is above the line of the form `held on the plate on which the entry is to be written. i To locate the sheet 68 the rod 45 is again set to l.-:bring the upper end of bar 24 below the' pawl 25.

The key 28 corresponding to that line of sheet 68 on which 'an entry is to be written is pressed and the corresponding bar 22 is moved in the path of nose .34 of the rack I3. The performance de- `scribed with reference 20 lis repeated, the spui Wheel I'I is rotated and transfers its movement to the spur wheels 'I,` 1. The sheet V68 is drawr downwards.` l

The carriage I travels en the frame while the entry is made in the well known manner. Hav- 5 ing the entry written the bar 23 is brought to that position in which its upper end projects in the path of lboth noses 34, 35 of both racks i9, 2U While the carriage I is brought back to its initia position the racks I9, are arrested by the ba:

l 20 23. Thel spur wheels I "I, I8 roll on the racks I9, The racks I9, 20 may be shifted step by step 20 and turn the gears 1, 'I and 8, 8. The sheets 68 and 68a are moved upwards in the chute anc 'may be taken out by' hand. If it is not ldesired toV withdraw the sheets 68, 68a the bar 23 is brougiii 5 out of the path of both noses 34, 35.

By shifting the carriage to its-initial position by the hand lever54, the platen with the sheets 68, 68a are simultaneously moved by a line.

The side walls and the partition wall 5 of the 1. In a ytypewriting machine having a paper.

carriage means for feeding at least one sheet in front of the platen said means comprising at least one rack, slidably mounted in the carriage, a gearing positively driven by said rack, spur wheels 40 formingpart of the gearing and engaging perforations of the sheet to'be located,.a spring acting on saidl rack, means to tension said spring, means. to retain the rack against the action of said spring, means to release the rack and means to stop the rack at a predetermined position.

2. In a typewriting machine, as defined in claim 1, bars adapted to cooperate with the rack to release it and to arrest it in predetermined posi tion, and a plurality of keys for operating said bars.

3. In a typewriting machine, thecombination of a platen, a support for a sheet of paper adapted to retain the sheet in operative relation with re spect to .the platen, a spring controlled 'train of gears, a rotaryl feeding element in engagement wi'th the sheet of paper and forming part of sai'd spring controlled train of gears, means for locking the train of gears against movement,` and means effective on the rotary feed element in engagement with the paper for releasing said spring controlled train of gears to the action-of' the spring for selectively determined rotation of the rotary feed element in engagement .withthe paper to advance it relatively to the platen over a selectively predetermined distance. 4. In a typewriting machine, the combination of a platen, a support for superimposed sheets of paper in front of the-platen, said sheets of paper being movable relatively to each other,

10 rotary feed elements, one in` engagement with cach sheet of paper, a train of gears I.connected with said lrotary feed elements, a spring for operating saidvtrain of gears, and a plurality of severaiiy operable key meansfor selectively deter raining the feed. element to be operated, and

' means accessible from a keyboard of the typewriting 'machine for selectively determining the movement of said rack bars under the action of their springs, and the movement of the feeding` eiements assciated with said rack bars respectively.

6. Ina typewritlng machine, the combination of a platen, a support for a pair of sheets of paper in operative relation with respect t the platen, means for spacing said sheets of paper from each other, a pair of rotary feedingelements in engagement with said papersfrom opposite sidesof the same, a pair, of-raclr bars, springs for operating said rack bars, gear trains linterposed between said rack bars and said rotary feed elements respectively, locking pawls for said rack bars, means for selectively releasing the locking pawls for said rack bars, and means independent oi' the selection of the releasing means for the locking pawls for limiting the movement oi' the released rack bar to drive the associated rotary feeding element forthe sheet of paper to be advanced.

7. In a typewriting machine, the combinationy of apaper support adapted to retain a pair of .sheets of paper in parallel superimposed but spaced relation from each other, rotary feeding elements in engagement with said sheets of paper respectively, a pair of rack bars, springs forvoperating said rack bars, sets of gearing interposed machine, rotary' feeding elements in engagement with the sheets of paper respectively. a pair of rack bars, springs for operating said rack bars, gear trains interposed between said rack Ibars and said feeding `elements respectively, whereby said feeding elements are actuated to the extent of movement of the associated rack bars, locking pawls for said rack bars, additional holding elements for maintaining the rack bars normally in a position in which the springs controlling them are under tension, a plurality of keys, and means interposed between the selectively operable keys and the rack bars for releasing the locking pawls of the rack bars, the additional holding elements for the rack bars and for stop# ping the rack bars after a.v selectively predetermined extent of movement of the same.

9. In a typewriting machine, the combination of a support for a pair of sheets of paper adapted to retain the sheets in superimposed but spaced relation and in operative position with respect to the platen of the machine, rotary feeding elements in permanent'engagement with said sheets oi paperrespectively, rack bars, springs for opbetween said rack bars and said feeding. elements respectively, said rack bars-being provided with stops, locking pawls, means for normally maintaining the locking pawls in engagement with the rack bars, means accessible from the keyboard of the typewriting machine for `selectively releasing one or the other locking pawl, bars supported in the machine for movement relatively to the rack bars, and key means iorv selectively moving any one 'of the plurality of bars into the path of movement of the stops on the rack bars.-

8. In a ltypewritlng machine, the combination of a support fora pair of sheets of paper in superimposed but spaced relation and in operative position with respect to the platen ofthe eratirig said rack bars, trains of gears interposed between said rack bars and said rotary feeding elements, locking pawls for said rackbars, means for selectively releasing one or the other lccking` pawls from the rack bar wlthwhich it is as' sociated, and means for imparting movementv to` a predetermined extent to therack bar released from its locking pawl, whereby the feeding element associated with said rack bar acts on the pertainingY sheet of papefto feed it a predetermined extent.

1o. In s typewriting machine, the combination of a support for a pair of sheets of paper adapted to retain' said papers in operative relation with respect to the platen and in superimposed but spaced relation with respect to each other, ro-

tary feeding elements in engagement with said sheets of paper respectively, a pair. of rack bars,

springs for operating said rack bars, gear trainsv interposed between said rack bars and said feeding elements respectively, locking pawls for-said rack bars and normally held in engagement with the same, said rack bars being providedwith stops flxedly located thereon, a plurality of keys'.

ja plurality of barsl operable selectively from .said keys and adapted upon operation 4of the keys to be projected into the path of the stop of either rack bar, and means for selectively releasing either locking pawl from said vrack bar, said releasing means being independent of said keys. Y PAUL HEGNAUER. 

